\Header{Hyperbolic}{Hyperbolic Functions}
\alias{acosh}{Hyperbolic}
\alias{asinh}{Hyperbolic}
\alias{atanh}{Hyperbolic}
\alias{cosh}{Hyperbolic}
\alias{sinh}{Hyperbolic}
\alias{tanh}{Hyperbolic}
\keyword{math}{Hyperbolic}
\begin{Description}\relax
These functions give the obvious hyperbolic functions.
They respectively compute the hyperbolic cosine, sine, tangent,
arc-cosine, arc-sine, arc-tangent.\end{Description}
\begin{Usage}
\begin{verbatim}
cosh(x)
sinh(x)
tanh(x)
acosh(x)
asinh(x)
atanh(x)
\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{x}] a numeric vector
\end{ldescription}
\end{Arguments}
\begin{SeeAlso}\relax
\code{\Link{cos}}, \code{\Link{sin}}, \code{\Link{tan}},
\code{\Link{acos}}, \code{\Link{asin}}, \code{\Link{atan}}.\end{SeeAlso}

